package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Autowired
    private MinioClient minioClient;

    @Autowired
    private MinioProperties minioProperties;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        //1. 创建minio对象
        //2. 判断是否存在桶
        boolean bucketExists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
        //3.不存在桶则创建并设定访问权限
        if (!bucketExists) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
            //设置权限
            String policy = """
                    {
                      "Statement" : [ {
                        "Action" : "s3:GetObject",
                        "Effect" : "Allow",
                        "Principal" : "*",
                        "Resource" : "arn:aws:s3:::%s/*"
                      } ],
                      "Version" : "2012-10-17"
                    }
                    """;
            policy = policy.formatted(minioProperties.getBucketName());
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder()
                    .bucket(minioProperties.getBucketName())
                    .config(policy)
                    .build());
        }
        //4.上传对象（防止名字一样  日期 + UUID + 图片名带后缀）
        String objectName = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID().toString().replace("-", "") + "-" + file.getOriginalFilename();
        //minioClient.uploadObject()  上传本地磁盘的文件
        // 把内存中的对象存储到minio
        minioClient.putObject(PutObjectArgs.builder()
                .bucket(minioProperties.getBucketName())
                .object(objectName)
                .stream(file.getInputStream(), file.getSize(), -1)
                .contentType(file.getContentType()).build());

        //5. 拼接地址
        return String.join("/", minioProperties.getEndpoint(), minioProperties.getBucketName(), objectName);
    }
}
